Nut-lock.



No. 743,334. PATENTED NOV,3, 1903.

P. ROBINSON.

NUT LOOK.

APPLICATION FILED AUG. 27. 1903.

no MODEL.

fin 172/63 fl zfimw gym view of the nut-lock in position.

tic. 743,354.

UNITE STATES fiatented November 3, 1903;

PATENT OFFICE.

NUT-LOCK.

SIPECIFICATION forming part of Letters Patent No. 743,334, dated i lovember 3, 1903. Application filed August 27, 1903. Serial No. 171I003. (No model.)

To all whom it may concern:

Be it known that I, Fonsrnn ROBINSON, a citizen of the United States of America, residing at Sistersville, in the county of Tyler and State of West Virginia, have invented certain new and useful Improvements in Nut- Locks, of'which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements innut-locks, the invention being particularly adapted for usein connection with nuts employed in eifecting a railroad-joint, though the device may be' used in various other connections where it is desired to securely look a nut in its tightened position upon a bolt.

Briefly described, the invention comprises a plate provided with openings to receive bolts and a washer provided with a plurality of concentrically-arranged openings, through which is adapted to be passeda pin for engagement with the slot provided therefor in I parts throughout the several views,in which- Figure 1 is a transverse vertical sectional Fig. 2 is a side elevation. Fig. 3 is a horizontal sectional view, partly broken away. Fig. 4 is a modified form of washer-plate.

By reference to the accompanying drawings it will be observed that the invention is designed especially for the locking together of two or more nuts where they may occur in regular straight-lineorder-for instance, as in connection with rail joints. The bolts must be of sufficient length to allow the ends to project beyond the outer face of the nut when the latter is tightened to place.

I have illustrated my invention in connection with a rail-joint, and in the accompany ing drawings 1 indicates the fish-plates, 2 the rails, 3 the bolt, and 4 the nut,all of which may be of the ordinary form of construction. On the extending threaded ends of the bolt is placed a washer-plate 5, provided with openings 6 to receive the bolts and having registering slots 7. After the washer-plate has been placed in position the washer Sis threaded onto the ends of the bolts, this washer being provided with circumferentiallyarranged apertures 9, through which is inserted the cotter-pin 10 for engagement in slot 7. I may employ a washer-plate 5, as shown in Fig. 4, which is provided with an inwardlyextending right-angular portion 6', but in other respects is of the same construction as the washer-plate 5. In using the washerplate of this construction it will be observed that the nuts must be tightened so that the top and bottom of each one must come in direct line. The angle, of the plate would itself prevent the turning of the nut, and only two of the apertured washers, one at each end, would need to be used to keep the plate in position. In this construction all the back pressure and strain of the nuts would come on the lower angle of the plate, while where aflat plate is employed this backward pres sure of the nuts would be against the aperturedwasher. I preferably employ the slot 7 in the plate to receive the cotter-pin in lieu of the aperture, as itinsures an easier registration with the openings or apertures in the washer 8, and the cotter-pin engaging through the slot outside of the nut 4 will be bent after being inserted, as shown in Fig. 3, so as to securely be retained in position.

In the practice of the inventionit will be observed that various slight changes may be made in the details of construction without departing from the general spirit of my invention. I

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a nut-lock, the combination with the bolts and nuts thereon, of a washer-plate mounted on the bolts against the outer face of the nuts and provided with openings to receive the bolts and having slots registering with said openings, apertured washers threaded on the nuts against the outer face of the washer plate, and cotter pins inserted through the apertured washers and washerplate substantially as and for the purpose described.

2. In a nut-lock, the combination with the I apertures in said washers and slots in said 10 plate, as and for the purpose described.

In testimony whereof I affix my signature in the presence of two witnesses.

FORSTER ROBINSON.

Witnesses:

J. L. THOMPSON, J. G. WOLFE. 

